Publication result detail

The Influence of Autocorrelation Length of Random Strength in Stochastic Discrete Simulations

KADĚROVÁ, J.; ELIÁŠ, J.; VOŘECHOVSKÝ, M.

Original Title

The Influence of Autocorrelation Length of Random Strength in Stochastic Discrete Simulations

English Title

The Influence of Autocorrelation Length of Random Strength in Stochastic Discrete Simulations

Type

Abstract

Original Abstract

The contribution studies an influence of the autocorrelation length of a random field of local tensile strength and fracture energy on the fracture process zone in concrete beams. Experimentally obtained data on bending of concrete specimens of four different sizes with and without notch were simulated by discrete lattice-particle model enhanced by stochastic extension. The simulations reveal an interesting and clear dependence of the peak load on the autocorrelation length in terms of the mean value and also variability. For example, when the autocorrelation length in unnotched specimens equals roughly the fracture process zone size, the average specimen strength is significantly reduced.

English abstract

The contribution studies an influence of the autocorrelation length of a random field of local tensile strength and fracture energy on the fracture process zone in concrete beams. Experimentally obtained data on bending of concrete specimens of four different sizes with and without notch were simulated by discrete lattice-particle model enhanced by stochastic extension. The simulations reveal an interesting and clear dependence of the peak load on the autocorrelation length in terms of the mean value and also variability. For example, when the autocorrelation length in unnotched specimens equals roughly the fracture process zone size, the average specimen strength is significantly reduced.

Keywords

Concrete, lattice–particle model, random field, bending, autocorrelation length.

Key words in English

Concrete, lattice–particle model, random field, bending, autocorrelation length.

Authors

KADĚROVÁ, J.; ELIÁŠ, J.; VOŘECHOVSKÝ, M.

RIV year

2016

Released

11.05.2015

Publisher

ITAM AS

Location

Praha, ČR

ISBN

978-80-86246-42-0

Book

Engineering Mechanics 2015

ISBN

1805-8248

Periodical

Engineering Mechanics

Volume

2015

State

Czech Republic

Pages from

132

Pages to

133

Pages count

2

BibTex

@misc{BUT114534,
  author="Jana {Kaděrová} and Jan {Eliáš} and Miroslav {Vořechovský}",
  title="The Influence of Autocorrelation Length of Random Strength in Stochastic Discrete Simulations",
  booktitle="Engineering Mechanics 2015",
  year="2015",
  journal="Engineering Mechanics",
  volume="2015",
  pages="132--133",
  publisher="ITAM AS",
  address="Praha, ČR",
  isbn="978-80-86246-42-0",
  issn="1805-8248",
  note="Abstract"
}